5. Surface protection

1017775. Surface CorrosionAbout 4% of the gross national product of a western industrial nation is destroyed by 25% of this could be avoided by applying existing is the reaction of a metallic material with its environment that causes a measurable change to the material and may lead to an impairment of the function of a component or of a complete system. This reaction is usually of an electrochemical nature, but in some cases it may also be of a chemical or metal-physical can also observe corrosion in our daily lives:Rust on vehicles, railings and fences Creeping destruction of road structures, bridges, build- ings Leaks in water pipelines and heating pipes made of steelCorrosion is unavoidable but the damage caused by corrosion can be avoided through the correct planning of suitable corrosion

5.4 Standardisation of galvanic corrosion protection systems 5.4.1 Designation system in accordance with DIN EN ISO 4042 The most common system for the abbreviated designation of galvanic surfaces on fasteners is the standard DIN EN ISO 4042. In the first place, this standard stipulates the dimensional requirements for fasteners made of steel and

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